This package can be used to drive a PM100A/D power meter from Thorlabs. It provides an object oriented interface to the SCPI commands using Python properties.
To install the ThorlabsPM100 driver, download the package and run the command:
python setup.py install
You can also directly move the ThorlabsPM100 to a location that Python can import from (directory in which scripts using PyDAQmx are run, etc.)
The best way to connect your instrument is with the pyvisa package. On windows the pyvisa a package is supported by the python(x,y) distribution. On linux, the instrument is automatically detected as a USBTMC device. A simple interface is described in the file usbtmc.py
First you need to create your instrument. Using visa:
import visa
from ThorlabsPM100 import ThorlabsPM100
inst = visa.instrument('USB0::0x0000::0x0000::DG5Axxxxxxxxx::INSTR', term_chars='\n', timeout=1)
power_meter = ThorlabsPM100(inst=inst)
Or using usbtmc (you nedd to have read and write access to the ‘/dev/usbtmc0’):
from ThorlabsPM100 import ThorlabsPM100, USBTMC
inst = USBTMC(device="/dev/usbtmc0")
power_meter = ThorlabsPM100(inst=inst)
Commands that set or query a value are Python properties of ThorlabsPM100 class. Other command are methods of ThorlabsPM100 class
print power_meter.read # Read-only property
print power_meter.sense.average.count # read property
power_meter.sense.average.count = 10 # write property
power_meter.system.beeper.immediate() # method